AC-DC SWITCH POWER SUPPLY AND POWER TRIODE THEREOF

摘要

Provided are an AC-DC switch power supply and a power triode thereof. The power triode includes a substrate (1) as a collector, at least two base regions (2, 4) isolated from each other formed on the substrate, an emitter (3, 5)formed on each base region and a collector pin (C) electrically connected to the substrate, at least two base pins (Bl, B2) electrically connected to the base regions, and at least two emitter pins (El, E2) electrically connected to the emitters, and the substrate, each base region and the emitter on each base region and the corresponding pins constitute a triode unit. The AC-DC switch power supply includes a power supply management circuit and a switch tube electrically connected to the power supply management circuit, with the switch tube having the structure of the power triode. The AC-DC switch power supply can ensure the performance of the switch power supply under the premise of controlling the cost.